not sure if this is a problem for some people still but ive been at this for just under a week and finnally won the war on this issue with Changeing the color of an object lol through the following code snippet
selectedTarget.GetComponent ().material.color = Color.blue;
on the object in question that you want to change the color of it has a default material called oddly enough
“default material” change this to some some other material
and the code executes as it should the objects change color
feelen pretty happy atm 
hope this helps someone else with similar issue
inside of the manuel at
- Unity Manual
- Graphics
- Graphics Overview
- Shaders
- Standard Shader
- Material parameters ← found helpful info
